China Integral Drill Rods Manufacturers and Suppliers ...
2021-8-12u2002·u2002Shank Hex 22X108mm 25X108mm 7degree 12degree Stone Drilling Taper Steel Bar Rod Shank Hex 22X108mm 25X108mm 7degree 12degree Stone Drilling Taper Steel Bar Rod Features for Plug Hole Rod: Plug hole integral drill steel is widely used in stone pit field to drill small holes.because of the integration of the drilling rods and drilling bits,it can ...
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